Bi-fold door extrusion



FIG. 1 is an end view of the bi-fold door extrusion showing our new design;

FIG. 2 is a front perspective view of the bi-fold door extrusion of FIG. 1; and,

FIG. 3 is a rear perspective view of the bi-fold door extrusion of FIGS. 1 and 2. 

CLAIM The ornamental design for a bi-fold door extrusion, as shown and described. 